[Bug 766177] Re: package postfix 2.6.5-3ubuntu0.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75

[James Page]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

It would appear that your installation is not configured with a valid
hostname - you will need to resolve this before postfix will install
correctly.

You can do this either by editing /etc/postfix/main.cf to set the
myhostname configuration parameter to a valid hostname and then
completing the installation:

  sudo vi /etc/postfix/main.cf
  sudo apt-get -f install

Please update this bug report if this resolves your issue.

Thanks

** Changed in: postfix (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/766177

Title:
  package postfix 2.6.5-3ubuntu0.1 failed to install/upgrade: subprocess
  installed post-installation script returned error exit status 75